Railroad-track structure.



A. J. PEMBLETON.

RAILROAD TRACK STRUCTURE.

APPLICATION FILED SEPT. 9. 190a.

Patented June 29, 1909.

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Patented June 29, 1909.

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A. J. PEMBLETON. RAILROAD TRACK STRUCTURE. APPLICATION FILED sauna. 1908.

A. J. PEMBLETON. RAILROAD TRACK STRUCTURE.

APPLICATION FILED SEPT. 9. 1908.

Patented June 29, 1909.

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31 QUE Z7 A. J. PEMBLETON.

RAILROAD TRAUK STRUCTURE.

APPLICATION FILED SEPT. 9. 1908.

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Patented June 29, 1909.

II x QUE ARTHUR J. PEMBLETON, OF CAMBRIDGE, MASSA()HUSETTS.

RAILROAD-TRACK STRUCTURE.

Specification of Letters Patent.

Patented June 29, 1909.

Application filed September 9, 1908. Serial No. 452,227.

To all whom it may concern:

Be it known that I, ARTHUR J. PEMBLE- TON, a citizen of Canada, residing at No. 7 Kinniard street, Cambridge, Massachusetts, have invented a new and useful Improvement in Railroad-Track Structures, of which the following is a specification.

My invention relates to a railroad track structure such as a switch, mate, frog or the like which is made in parts.

With a form of track structure in common use, the entire device is made of hard material whichmust be ground to secure an ac curate fit. This structure when connected to the railroad bed often becomes broken and as it is a solid casting the entire structure must be cast aside as useless. Moreover it often happens that a part of the casting is softer and wears away more quickly than the adjoining part. This produces a hole in the structure due to the wheels of the train pounding into the soft part. The entire structure must then be thrown away.

One of the objects of my invention is to avoid the expense of replacing an entire switch, mate or frog when a part breaks at the same time providing a simple and effective structure for railroad use that will stand the rough usage incident to its use without becoming loose and shaking apart.

Another object of my invention is to provide sectional switch, mate or frog with rail extensions of standard shape which are firmly but detachably united to the body portion of the structure.

Another object of my invention is to provide a sectional switch or the like, the body portion of which is detachably united to rail extensions by a tongue and groove conneo tion arranged so as to prevent vertical displacement of the body and rail extensions with respect to each other.

Another object of my invention is to provide a sectional switch or the like, the body portion of which is detachably united to rail extensions by bolts or the like which prevent sidewise displacement of the parts.

WVith the above and other objects in view my invention consists in the parts, impnevements and combinations more fully set forth hereinafter.

Referring now to the drawings which accompany the specification and form a part thereof,-Figure 1 is a plan view of an assembled mate embodying my invention;

Fig. 2 is a side elevation of the same; Figs. 3, 4, 5 illustrate the parts of the mate, ready for assembling Fig. 6 illustrates another embodiment of the invention; 7, 8, and 9 are transverse sections through Fig. 6 on lines 7, 8 and 9 respectively. Figs. 10, 11,

12, 13 illustrate the parts of the switch shown in Fig. 6, before assembling. Fig. 1 1 is a plan view of a frog embodying my invention; and Fig. 15 shows a switch and mate embodying one form of the invention.

1n the embodiment of the invention illus trated in Fig. 1, the mate consists of an intermediate body portion 1 provided with a point 2, said point being preferably integral with said body portion. Suitable too and heel rail extensions 3, 1, respectively, are provided which are of standard cross-section, the same as the section of the rails forming the track to which the mate is to be secured. l\;leans are provided for securing the body portion to the rail extensions. These means in the best embodiment of the invention prevent vertical displacement of the body portion with relation to the rail extensions and also prevent a lateral shift of the parts with respect to each other. In the form of the invention illustrated, the rail extensions 3, 1, are provided with heads 5, (i which detachably connect with correspond ing heads 7, 8 on. the body 1. The heads are formed integral with the rail extensions and body and may be forged on the corrosjmnding parts, or may be cast thereon as desired. If cast, the webs 9, 10 of the rail extensions are drilled and the heads cast on the webs, the metal flowing through the drilled holes, thus firmly securing the heads to the extensions or body. In order to prevent vertical displacement of the point carrying portion of the structure, the heads are provided with tongues 10, 11 and grooves 12. 13, respectively. These tongues and grooves run horizontally or in a plane parallel to the tread of the rail. The are preferably niachincd or grouml to fit each other. In order to prevent a lateral shift of the parts, the heads are perforated at 1 1; and bolts 15 are passed through the holes to hold the parts together. The belt holes nury be made larger than the bolts and Babbitt .150 or soft metal used in the holes to secure a tight bearing for the bolts. These bolts are provided with heads 16, nuts 17 and lock nuts 18. The tongue and groove connections, it

will be seen, also relieve the bolts from undue, vertical strain.

In the form of the invention illustrated in Fig. 6, the rail extensions 19, 20, (toe and heel respectively) are provided with heads 21, 22, which are preferably cast or forged on the rail extensions so as to form an integral part thereof. The body portion 24 is detaohably secured to the rail extensions. In the embodiment of the invention illustrated, the body portion 24 is cast or forged in one piece with projecting heads 27, 28, 29, 30. The body portion is preferably shaped as shown with sides 25, 26 which rest on the ties.

In the best embodiment of the invention a removable top running plate 300 is provided which carries the guard 301 and wheel tread 302. The running plate is detachably secured to the body by means of bolts or keys 34 which pass through the sides of the body and through suitable lugs 303 on the top running plate. The top running plate is fitted between the heads 27, 28, 29, 30 of the body so as to prevent side movement of the running plate. One or more ears 305 project from the top running plate and he between the corresponding heads so as to prevent movement of the plate lengthwise of the switch. Tongue and groove connections 31, 32 are provided in the heads to prevent vertical displacement of the body. Bolts 33 pass through holes in the heads and rail extensions so as to firmly unite the body with the rail extensions.

The frog shown in Fig. 14 is built in sec- 'tions in accordance with the principle illustrated in Fig. 6. The body portion 35 carrying the running plate with point 36 is detachably connected to the rail extensions 37, 38 by heads 40, bolts 41 and a tongue and groove connection.

The mate and switch illustrated in Fig. 15 is likewise built after the principle of Fig. 6. The rail extension 42 is connected to the body 43 carrying running plate with point 44 by heads 46, 47, a tongue and groove connection and bolts 48. The heel extension 49 is connected to the body by heads 50, bolts 51 and a suitable tongue and groove connection. The body portion 52 of the switch carrying the running plate with point 53 is also detachably connected to heel and toe rail extensions 54, 55, by heads 56, bolts 57 and a tongue and groove connection.

In operation, should one part of the switch, frog or mate break it can be readily and cheaply replaced.

It will be understood that the specific form assumed by the invention may be varied without departing from the principle thereof.

Having thus described my invention what I desire to secure by Letters Patent is,

1. In a sectional railroad track structure, such as a switch, mate, frog or the like, the

combination of rail extensions, a separate intermediate body portion provided with a point and securing means carried by said body portion and rail extensions for removably uniting said body portion. to said rail extensions.

2. In a railroad track structure, such as a switch, mate, frog or the like, the combination of rail extensions, the cross section of which is the same as that of the railsto which the track structure is to be united, an intermediate body portion carrying a point and means for removably uniting said body portion to said rail extensions.

3. In a railroad track structure, a sec tional switch, frog, mate or the like comprising rail extensions, a separate point carrying body portion, securing means carried by said body portion and rail extensions for uniting said body portion to said rail extensions, said means preventing vertical displacement of said body portion with relation to said extensions.

4. In a railroad track structure a sec tional switch, frog, mate or the like, comprising rail extensions, a separate body portion carrying a point, a tongue and groove connection between said body portion and said rail extensions, which connection prevents a vertical displacement of said body portion with relation to said rail extensions In a railroad track structure, a sectional switch, frog, mate or the like, comprising rail extensions, a separate body portion carrying a point, securing means carried by said body portion and rail extensions for uniting said body portion to said rail extensions so as to prevent a lateral shift of the parts with respect to each other.

6. In a railroad track structure, a sectional switch, frog, mate or the like comprising rail extensions, heads united to said extensions, an intermediate body portion carrying a point, and means for uniting said body portion to said heads.

7. In a railroad track structure, a sectional switch, frog, mate or the like, comprising rail extensions, united to said extensions, an intermediate body portion carrying a point, heads united to said body portion, and a tongue and groove connection in said heads arranged substantially horizontally for uniting said body portion to said extensions in such a manner as to prevent vertical displacement of said body portion, with relation to said extensions.

8. In a railroad track structure, a sec tional switch, frog, mate or the like, comprising rail extensions, heads united to said extensions, an intermediate body portion carrying a point, heads secured to said body portion, and a tongue and groove connection in said heads arranged. substantially horizontally for uniting said body portion to said ex tensions in such a manner as to prevent vertieal displacement of said body portion with relation to said extensions, and bolts for preventing a lateral shift of the parts with rc spect to each other. i

9. In a railroad track structure, such as a switch, mate, frog or the like, the combination of rail extensions, of standard cross section, an intermediate body portion detachably secured thereto, and a running plate carrying a point detaehably secured to said body portion.

10. Ina railroad track structure such as a switch, mate, l'rog or the like, the combination of rail extensions of standard cross section, an intermediate body portion detachably secured thereto, and a running plate carrying a point detachably secured to said body portion, said running plate being provided with means for preventing movem nt of the plate, lengthwise of the body portion.

11. In a railroad track structure such as a switch, mate, 'l'rog, or the like, the combination of rail extensions 01' standard cross section, an intermediate body portion detach ably secured thereto, and a running plate carrying a point detaehably secured to said body portion, said running plate being provided with means for preventing movement of the plate laterally with relation to the body portion.

12. In a railroad track structure such as a switch, mate, frog, or the like, the combination of rail extensions of standard cross section, an intermediate body portion detach ably secured thereto, and a running plate carrying a point detachably secured to said body portion, said running plate being provided with means for preventing movement of the plate, lengthwise ol' the body portion, said running plate being also provided with means for preventing movement ol the plate laterally with relation to the body portion.

13. In a railroad track structure, such as a switch, mate, i'rog or the like, the combination of rail extensions of standard cross section, an intermediate body portion detachably secured thereto, a running plate carrying a point detachably secured to said body portion and bolts for detachably securing said plate to said body portion.

14. In a sectional railroad track structure such as a switch, lrog, mate or the like, the combination of rail extensions, the cross sec tion of which is the same as that of the rails to which the track structure is to be united, an intermediate body portion carrying a point, heads mounted on said body portion and rail extensions, securing means carried by said heads for rcmovably uniting said body portion and rail extensions, one element of said securing means including a projection carried by one of said heads for preventing displacement between the heads.

15. A sectional railroad track structure comprising the combination of a rail extension, the crosssection of which is the same as that of the rail to which the track structure is to be united, a body portion carrying the wheel tread, a head integral with said rail extension, a head integral with said body portion, securing means carried by said heads for removably uniting said body portion and rail extension, one element of said securing means including a projection carried by one of said heads for preventing displacement between the heads.

16. A sectional railroad track structure comprising the combination of a rail extension, the cross-section of which is the same as that ol' the rail to which the track structure is to be united, a body portion detachably secured to said rail extension and carrying the wheel tread, a head united to said rail extension, a head united to said body portion and a tongue and groove connection in said heads arranged substantially horizontal or uniting said body portion to said extension so as to prevent vertical displacement of the body portion with relation. to the extension.

17. A sectional railroad track structure comprising the combination of a rail extension, the cross-section of which is the same as that ol' the rail to which the track structure is to be united, a body portion carrying the wheel tread, a head integral with said rail extension, at head integral with said body portion, a tongue and groove connection in said heads arranged substantially horizontal to unite said body portion to said extension so as to prevent vertical displacement of one with relation to the other and bolts passing through one of said heads for preventing the lateral shift of the parts with respect to each other.

In testimony whereol', I have signed my name to this specification, in the presence of two subscribing witnesses.

ARTHUR J. PEMBLETON.

Witnesses:

\V. O. MAnGEsoN, WM. F. BISSING. 

